New construction - mold on the roof beams

Hello everyone,

Our heating system was put into operation 3 weeks ago. Unfortunately, the roofers placed those black things (I don't know the name, see picture Roof 2) in between. As a result, a lot of moisture has formed and now the beams are starting to mold.

Our construction manager said we should wait until everything is dry and then treat the roof beams; in the long term, we have no disadvantages to fear.

What do you think?

Thanks and best regards
LG

That looks like insulation to me. Probably wood fiber insulation. To ensure that NO moisture gets in, a foil must be placed underneath as a vapor barrier (and sealed tightly).

So since these plastic things have been attached, the moisture is gradually going out now, so that should no longer be a problem.

What are those black parts on the roof membrane? Are they supposed to be there? My cold roof doesn’t have any.

They are there so that the moisture can escape, and exactly that was forgotten. The moisture has gone out well since these things have been installed. There may be other solutions, but I'm really the wrong person to ask :)

Do you know by now what they are called? I probably need such parts too.